Biological networks are complex systems that illustrate how different biological components interact with each other. These components can include genes, proteins, and metabolites, which work together to perform various functions within living organisms. By mapping these interactions, scientists can better understand processes like cellular communication, metabolism, and disease progression. One common type of biological network is the gene regulatory network, which shows how genes control each other's expression. Another example is the protein-protein interaction network, highlighting how proteins collaborate to carry out cellular tasks. Studying these networks helps researchers identify potential targets for new therapies and improve our understanding of life at a molecular level.